<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        function rightchange(char,n) {
            var arr = char.split("");
            for (var i = 1; i <= n; i++) {
                arr.unshift(arr.pop());
            }
            char = arr.join("");
            return char;
        }
        console.log(rightchange("abcdef",2));
        console.log(rightchange("hello",0));
    </script>
</head>
<body>
    
</body>
</html>